A5100334917- Hydrology and Watershed Management Studies
- Soil and Water Nutrient Dynamics
- Agriculture, Soil, Plant Science
- Hydrological Forecasting Using AI
- Flood Risk Assessment and Management
- Soil erosion and sediment transport
- Ecology and Conservation Studies
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Remote Sensing and Land Use
- Plant Water Relations and Carbon Dynamics
- Environmental Changes in China
- Soil Moisture and Remote Sensing
- Cryospheric studies and observations
- Remote Sensing and LiDAR Applications
- Environmental and Agricultural Sciences
- Water resources management and optimization
- Climate variability and models
- Hydrology and Drought Analysis
- Water Quality and Pollution Assessment
- Hydrology and Sediment Transport Processes
- Precipitation Measurement and Analysis
- 3D Surveying and Cultural Heritage
- Fish Ecology and Management Studies
- Soil and Unsaturated Flow
Konkuk University
2016-2025
Kangwon National University
2024
Konkuk University Medical Center
2011-2023
Chosun University
2017-2023
eBay (Ireland)
2022
Ulsan National Institute of Science and Technology
2020
Orangutan Conservancy
2020
National Institute of Animal Science
2018
Georgia Institute of Technology
2015
Agency for Defense Development
2014-2015
In this paper, the development of a low cost fuel cell inverter system is detailed. The approach consists three-terminal push-pull dc-dc converter to boost voltage (48V) /spl plusmn/200 VDC. A four switch [insulated gate bipolar transistor (IGBT)] employed produce 120-V/240-V, 60-Hz ac outputs. High performance, easy manufacturability, lower component count, safety and are addressed. Protection diagnostic features form an important part design. Another highlight proposed design control...
Small-scale reservoirs located in river estuaries are a significant water resource supporting agricultural and industrial activities; however, they face annual challenges of eutrophication algal bloom occurrences due to excessive nutrient accumulation watershed characteristics. Efficient management blooms necessitates comprehensive analysis their spatiotemporal distribution Therefore, this study aims develop chlorophyll-a (Chl-a) estimation model based on high-resolution satellite remote...
Specific-heat data, extending from 0.4 to 120 K, in both a zero field and at 7 T, are reported for five samples of Bi-Ca-Sr-Cu oxide one Tl-Ca-Ba-Cu oxide. The occurrence bulk superconductivity all six is shown by Meissner-effect measurements, confirmed the Tl sample two Bi specific-heat data. In field, shows contribution specific heat that linear temperature comparable those Y${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7}$. For compound term within experimental uncertainty, least...
Abstract Recently, the Korean peninsula faced severe drought for more than 3 years (2013–2015). Drought in this region is characterized by multidecadal variability, as seen from one of longest systematic records available Asia 1770 to 2015. This paper explores how return period 2013–2015 varies over historical provide a context changing climate and severity region. A nonstationary, multivariate, Bayesian copula model duration developed applied. Given wetting trend last 50 years, recent...
The impacts of future climate change on the agricultural water supply capacities irrigation facilities in Geum River basin (9645.5 km2) South Korea were investigated using an integrated modeling framework that included a balance network model (MODSIM) and watershed-scale hydrologic (Soil Water Assessment Tool, SWAT). discharges baseflows from upland drainage areas estimated SWAT, predicted flow was used to feed reservoirs multipurpose dams subwatersheds. Using split sampling method, we...
This study developed a multi-criteria approach to spatially assess the robust water resource vulnerability in sub-basins and applied it Han River basin. The Intergovernmental Panel on Climate Change (IPCC) suggested three factors of vulnerability; namely, exposure, sensitivity adaptive capacity were used this with respect quantity quality. In study, 16 indicators 13 quality selected identify using Technique for Order Preference by Similarity Ideal Solution (TOPSIS) method. Environmental...
This study estimates soil moisture content (SMC) using Sentinel-1A/B C-band synthetic aperture radar (SAR) images and an artificial neural network (ANN) over a 40 × 50-km2 area located in the Geum River basin South Korea. The hydrological components characterized by antecedent precipitation index (API) dry days were used as input data well SAR (cross-polarization (VH) copolarization (VV) backscattering coefficients local incidence angle), topographic (elevation slope), (percentage of clay...
The aim of this study was to evaluate hydrologic impacts potential climate and land use changes in a mountainous watershed South Korea. climatic data predicted by MIROC3.2 HiRes GCM A1B for three time periods (2010-2039, 2040-2069, 2070-2099) were prepared using change factor statistical downscaling method. future uses the Conservation Land Use its Effects at Small regional extent (CLUE-s) model establishing logistic regression five types with 11 driving forces represented spatial...
The aim of this study was to assess the potential impacts climate change on hydrology and stream water quality for a 6642 km2 mountainous dam watershed in South Korea using Soil Water Assessment Tool (SWAT). model calibrated three years (1998-2000) validated another (2001-2003) daily streamflow data at locations monthly two locations. For future evaluation, MIROC3.2 HiRes ECHAM5-OM by Special Report Emissions Scenarios (SRES) A2, A1B, B1 Intergovernmental Panel Climate Change (IPCC) were...
Abstract Future climate change is a source of growing concerns for the supply energy and resources, it may have significant impacts on industry economy. Major effects are likely to arise from changes freshwater resources system, due connection generation these water systems. Using future data downscaled by stochastic weather generator, this study investigates potential long‐term reservoir operations at Chungju multipurpose dam in South Korea, specifically considering reliability hydropower....
Abstract. Watershed health, including the natural environment, hydrology, water quality, and aquatic ecology, is assessed for Han River basin (34 148 km2) in South Korea by using Soil Water Assessment Tool (SWAT). The evaluation procedures follow those of Healthy Watersheds U.S. Environmental Protection Agency (EPA). Six components watershed landscape are examined to evaluate health (basin capacity): stream geomorphology, habitat condition, biological condition. In particular, SWAT applied...
Colored dissolved organic matter (CDOM) in inland waters is used as a proxy to estimate carbon (DOC) and may be key indicator of water quality nutrient enrichment. CDOM optically active fraction DOC so that remote sensing techniques can remotely monitor with wide spatial coverage. However, effectively retrieve using optical algorithms, it critical select the absorption coefficient at an appropriate wavelength output variable optimize input reflectance wavelengths. In this study, we...